7 January - Solution for the last clue and the next cryptic crossword clue

Head of state rests uneasily showing strain (6)
Solution – stress

Strain = stress

Head of state = s ie the first letter, or, head, of the word "state"

Rests uneasily = an anagram of "rests" ie the letters are uneasy or mixed up

S + tress = stress

Today’s cryptic crossword clue – solution tomorrow

Smart spook snatching short sleep (6)
Source of clue – NZ Herald

Hint – the first letter is s